68211712038353 has 8 divisors (see below), whose sum is σ = 73926657047208. Its totient is φ = 62563608491904.

The previous prime is 68211712038311. The next prime is 68211712038373. The reversal of 68211712038353 is 35383021711286.

It can be written as a sum of positive squares in 4 ways, for example, as 3225429218704 + 64986282819649 = 1795948^2 + 8061407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-68211712038353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68211712038373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16710363476 + ... + 16710367557.

It is an arithmetic number, because the mean of its divisors is an integer number (9240832130901).

Almost surely, 2^{68211712038353} is an apocalyptic number.

It is an amenable number.

68211712038353 is a deficient number, since it is larger than the sum of its proper divisors (5714945008855).

68211712038353 is a wasteful number, since it uses less digits than its factorization.

68211712038353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33420731203.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 68211712038353 in words is "sixty-eight trillion, two hundred eleven billion, seven hundred twelve million, thirty-eight thousand, three hundred fifty-three".